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  1. donkey

    Replacing Batteries with a USB Cable to power Electric Device?

    Durahl I know you are a laymen so I will run this step by step for you the current measuring item needed is a multimeter put that to current or amps setting connect one lead to the positive of your battery connect other to the terminal where the battery was supposed to connect. DO NOT LET...
  2. donkey

    Beginner project - rotating motor?

    ok here comes the fun part, first remove the small lever install a DC motor with same shaft size connect dc motor to batteries, if it turns the wrong way connect batteries other way around that is the basics now you will want to control speed this can be done a few ways, first is to lower...
  3. donkey

    so..... I'm a new Dad!! :)

    my first, the missuses 3rd. have to ask why people say congrats? is that congrats on not being able to sleep for the next 3 years? or congrats on being puked up on everytime you feed them? or congrats for the amount of stress associated with being a dad as you will always be double guessing...
  4. donkey

    Adjustable controller

    Steve the OP stated there were other "smaller items" also am I wrong in assuming that the watts stated is only for the initial warm up? after that they would use a lot less right? or even use it for shorter periods which if you are lucky will prevent the 10amp total being reached
  5. donkey

    Adjustable controller

    also this takes into consideration that all appliances are new and working efficiently as older items can draw a little more current to make up for the wear and tear
  6. donkey

    Adjustable controller

    hey buddy welcome. now I am a noob and I would not recommend ever overloading a circuit board due to fire risks HOWEVER the amp rating for both while the numbers don't add up lets assume you do need a 10AMP outlet. now the reason for this is the time while it heats up on the start will draw a...
  7. donkey

    Ipod GAME CALLER

    oh and last but not least is an FM transmitter their ranges vary but that's how you play music in your car, find one with a decent range or get someone on here to make a suitable one for you
  8. donkey

    Ipod GAME CALLER

    another thought came to mind, grab a laptop and a desktop control app for the Iphone. then control the music program over wifi. I use Jumi one to annoy my kids as it has a fly but there are others. if you are simply using MP3's then VLC has a range of programs on android and Iphone to stream...
  9. donkey

    Ipod GAME CALLER

    this can be done many ways, the easiest way off the top of my head is simply plug it into the earphone jack of another phone and then call it. to get optimal sound try an amplifier then Iphones have Bluetooth (not so long range) and wifi(that you can use extenders for) hope this helps
  10. donkey

    so..... I'm a new Dad!! :)

    I must point out one thing from the whole experience. no one asked how dad was going. from an electronics point of view if I was a third party and an engineer and a client were putting the final touches on a product, the engineer (the mother as I call them as they do all the labour) is never...
  11. donkey

    so..... I'm a new Dad!! :)

    my missus had a baby on Tuesday at 115am....... just saying
  12. donkey

    Grounding Question

    I made a project once, it was a very simple led and motor design for my nephew to play with. all the wires made sense to me. My brother however got confused due to the fact they were all blue. so I labelled them start to finish showing where everything got plugged in. now I did not put on...
  13. donkey

    Mobile Robot Communication Project

    sorry been occupied so haven't responded. Andy I am of the firm belief your idea is a good one. I just see it as a backup. put it as a secondary or back up safety issue, the robot is something that can also be used, or taken offline for repairs or put in one area if power outages occut. do...
  14. donkey

    Mobile Robot Communication Project

    ok now we are getting simple. next question for you is: rather than having a robot move around an area would it not be better to install something like smoke detectors in these areas? that way rather than a robot being in the wrong place when a leak starts the detectors are stationery in the...
  15. donkey

    Grounding Question

    ground being used so commonly on nearly every schematic I see makes it a hard change. also when the device Crogdor is using has an area labelled ground I find labelling it anything other will confuse the original poster. for those that know electronics we know ground can be either a reference...
  16. donkey

    Grounding Question

    I know I am going to get corrected here but its my way of looking at the data lines. a common ground is needed for the 0 and 1's. it needs a point that is 0 that is ground then when a signal goes through it understands that's a 1. now the reason you need a common ground is grab 2 batteries...
  17. donkey

    Mobile Robot Communication Project

    I wanted to add something here too. the design of your project is something that makes me wonder HOW you are going to do this. will the robot work on a predefined course and the only communicating is the gas detector alarm? or is robot going to be controlled wirelessly as well? if its the...
  18. donkey

    metal detector pinpointer

    http://www.minelab.com/__files/f/11043 http://www.wikihow.com/Build-a-Metal-Detector these are the theory for you. hope something in there helps. Oh and welcome to the forums
  19. donkey

    circuit diagram needed.

    yes but yours is much cheaper
  20. donkey

    circuit diagram needed.

    http://www.powerstream.com/DC-PC-12V.htm these guys seem ok.
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